Antonia Martínez Lagares (April 22, 1949 – March 4, 1970) was a 20-year-old student at the University of Puerto Rico at Río Piedras who was shot and killed by a policeman as she criticized the police violence while watching the 1970 anti-Vietnam War and Education Reform student protests at the University of Puerto Rico.
She became a symbol against oppression, intolerance and US imperialism in post-Ponce Massacre Puerto Rico.